Method contains

src/AutoNumericHelper.js:208–215

* Return `true` is the string `str` contains the string `needle` * Note: this function does not coerce the parameters types * * @param {string} str * @param {string} needle * @returns {boolean}

(str, needle)

     * @returns {boolean}
     */
    static contains(str, needle) {
        //TODO Use `Array.prototype.includes()` when available (cf. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes)
        if (!this.isString(str) || !this.isString(needle) || str === '' || needle === '') {
            return false;
        }

        return str.indexOf(needle) !== -1;
    }

    /**
     * Return `true` if the `needle` is in the array